Connecting rod



Feb. 6, 1923. v 11,444,472

H. B. LAYMAN CONNECTING ROD ori inal Filed Mar. 24," 1916 2 h ets-sheet 1 Huron M ,4 @0 6.

Feb. 6, 1923.

H. B. LAYMAN CONNECTING ROD Original Filed MET. 24, 1916 2 sheets-sheet 2 $13 ampemtoz 551 Qb tovmm; 3

W w M0 M Patented ab. 1.923. p

i il ih i fd HEBEON B. LAYBEAN, OF NEW YORK, 1 T.

Y., ASSIGNOR TO THE LAYMAN PRESSED ROD COldPANY, INC., 015 NEW YORK, N. Y., A CORPORATION 01? NE? YORK.

CONNECTING ROD.

Original application filed March 24,

To all whom it may concern:

Be it known that I, HnBnoN B. LAYMAN, a citizen of the United States of America, residing at New York, in the county and State of New York. have invented certain new and useful Improvements in Connecting Rods, of which the following is a full, clear, and exact description.

This invention relates to sheet metal connecting rods, and more particularly to rods built up from a plurality of sheet metal parts.

' The present application is a division of my co-pending application Serial No. 86,361, filed March 24, 1916.

One of the objects of the present invention is to provide an improved means for holding the piston pin in place. Another objectis the provision of means whereby the cap may be secured to the rod at four or more points.

Other important objects of this invention. are the provision of means for reinforcing the shank portion of the rod against shear as well as compression and more particularly increasing the ability of the rod to withstand tension in the region of the junction of the bosses and shank.

Other objects will appear in the accompanying specification and in the appended claims.

In the drawings Fig. 1 is a side elevation of a rod showing an embodiment of the invention in which 41- attaching bolts are provided.

Fig. 2 is a cross section taken on line hl-M of Fig. 1.

Fig. '3 is an edge view of the rod shown in F ig. 1.

Fig. i is a side elevation of the rod with the piston end broken away and partly in section and the crank end shown in section taken on line R-lt of F ig. 3.

Fig. 5 is a bottom view of the rod shown 1 Figs 1, 3 and 4.. Half of the view shows .he bottom of the cap and the other half he abutting face of the rod at the juncion with the cap.

Fig. 6 is a sectional view taken on line M-M of Fig. 1.

The rod herein illustrated comprises two similar sheet metal body sections E having flanges E which abut in a place at right angles to the crank axis.

1918, Serial no. 86,361.

Divided and this application filed August 9,

Serial No. 490,854.

The two flanges form a reinforcing rib which extends along the shank and around the crank shaft and piston pin bosses. One of the principal functions of the flange is to provide an adequate means for securing the two parts together and also to form a reinforcement around the crank shaft boss such as will prevent the boss from spreadout of round. The general arrangement of this flange is best shown in F ig. 5.

Within the body sections, and preferably of similar conformation, are two reinforcmg members E These are formed from sheet metal and are secured to each body section by electric welding as indicated by the circles marked E in Fig. 4. The reinforcing members not only serve as a shank reinforce but extending as they do about the piston and crank ends, serve as a supplementary means for carrying the load from the piston to the crank ends of the rod.

The body sections of the rod are provided with bosses at one end and these bosses togetl'ier form a piston pin boss in the completed rod. The pin boss is also provided with interior reinforcing sleeve-like members E having flanges E which, at the center of the rod, abut against and are socured to the reinforcements E By and between the parts which form the piston end of the rod there is provided a bolt boss E disposed an angle thereto and intercepting the pin as shown in Fig. 4. The bolt boss is provided with an interior reinforcement E which has a flange E at one end to form a seat for a cap screw or stud. The reinforcing ferrule is preferably threaded for half its length to receive the cap screw.

The pinch bolt boss is cut in two midway of its length as shown at E to allow the piston pin boss to be pinched around the piston pin (not here shown).

As shown in F ig. 6, the body sections are provided with integral crank pin bosses E and secured wi .iin these bosses are rein forcing members'E These members are drawn flanged ferrules which abut against the reinforcing members E at the center of the rod. Fitted on and encircling the boss E is a member E which has an abutting flange E which adjoins the flange E of another and substantially similar member E By and between the abutting flanges E and E are formed recesses into which are fitted ferrules E (see Fig. 4;). By this means the cap is secured in place; it will be noticed that the member E does not rest upon the integ 'al boss it of the body sections, but upon the reinforcing liner bushing E. In actual practice little is gained in strength by extending the boss E for the full width of the crank pin boss (i. e. the

overallwidth of the two bushings E) and to draw the metal to such depth requires additional operations, which, in practice, may be dispensed with. hen the crank end is thus constructed there will be a rings in place and also aid in securing the body sections together.

In Figs. 4- and 5 the ferrules E, which are shown in the bolt bosses 'ljormed by and between the abutting parts on the crank boss, are provided with a lining sleeve E and a threaded end portion. The bolt bosses are also provided with cap members E having flanges E which abut with the flanges E and E. This cap forms a closure for the bolt boss and gives the rod a syn'nnetrica-l and pleasing finish, besides very niaterially strengthening the bolt boss against the tension of the bolt.

In order to lubricate the crank end bearingl provide oil tubes These tubes are secured. in bosses formed by and between the flanges E and E The tubes may be secured in position by welding or brazing. The tubesare adapted to deposit the oil in the crank core and act as oil scoops.

The provision or the central reinforcing member and the arangement of the collar-like reinforcing member at the crank ends of the rod are particularly adapted for at bolt caps on which the securing bosses are disposed as to the side of a plane passing through the center of the rod (see Fig. 5).

hat I claim is 1. A sheet a l connecting" rod compriseasing sheet metal parts, and having pinchholt bees at the piston pin end formed by and between the abutting parts at the pisa sten pi-i1 end and a crank pin end, a

ton pin end of the rod, and a crank pin bearing in the crank end oi? the rod in which the crank pin is rotatable.

A sheet n'ietal connecting rod, comprising abutting sheet metal parts and having a piston end and a crank end said crank end having a plurality of pairs of bolt bosses disposed at each side of the axis of the rod, said bosses comprisingexteriorly applied elements aflixed to the crank end portions of the rod and shaped to receive fastening HIGLUISfiEOl a cap.

i i connecting rod having a bolt boss formed by and between parts composing one end of the rod, said boss being sawn in two to allow it to be pinched by a bolt.

l. ll sheet metal connecting rod provided with a shank portion and an integral end portion forming a crankshaft boss, a flange integral with the said shank portion and extending around said boss approximately centrally axially and means each side of said flange for securing a cap to the rod.

5. A connecting rod having an integral shank and end portion provided with a cap, the said rod and cap together forming a crank shaft boss, the said rod having a radial flange approximately central or" the boss axially and means disposed at eacside thereof encompassing the rod portion oi? said boss for securing the cap to therod.

(3. A. connecting rod having a boss in one end portion, and. a pinch bolt boss at an anglethereto formed by a pluralityof parts, said pinch bolt'boss being sawn in two to allow it to be pinched by a bolt.

7. A connecting rod comprising a pinrality of sheet metal parts'having piston and crank end portions and reinforcing means secured between said parts and against which the parts abut, said reinforcing means having portions thereof: extending around the pistonand crank pins to reinforce the end portions oi? the rod.

8. A connectingrod comprising a plural ity oi sheet metal parts, each said part hav ing bosses at their ends, reinforcing members between the said parts against which the said parts abut, sleeve-like members within thelarger endbosses abutting said reinforcing members, and ollai'-like'fianges cooperating with said sleeve members and the larger end boss tor'eintorce the endof the rod.

In testimony whereof I hereto alih; my

signature.

HEBRON l3. LAYMAN. 

